Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22c7a0f24bfabeb48f5bf88b2f81c610d692a1019e3633f3c348cc9dd0d69817' 
  AND token = 'c4Kd8Vi71bvHraSrpg0abLyJv9fEk9tve/+eaX2fUFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}